Qatar Telecommunications Co QTEL said on Saturday it would begin tender offers for shares in Indonesian telecoms firm PT Indosat on Tuesday to lift its stake to 65 percent, the maximum allowed. Indonesia limits foreign ownership in the telecommunication sector to a maximum of 65 percent for mobile phone operators and 49 percent for fixed-line operators. Two tender offers would begin concurrently in Indonesia and the United States at 7,388 rupiahs ($0.661) per share and would expire on Feb. 18, Qtel said.